公开(公告)号：US06374662B1

公开(公告)日：2002-04-23

申请号：US09479012

申请日：2000-01-07

申请人： Ryutaro Oda ,  Motoo Kinoshita ,  Kunihiko Okubo ,  Keiso Kawamoto ,  Hiroshi Nakano

发明人： Ryutaro Oda ,  Motoo Kinoshita ,  Kunihiko Okubo ,  Keiso Kawamoto ,  Hiroshi Nakano

IPC分类号： G01N33497

CPC分类号： G01N35/1097 ,  G01N33/0014 ,  G01N33/0047

摘要： An odor measuring device has a collector tube containing an adsorbent which adsorbs sample components with odor at normal temperatures and desorbs them when heated. Flow routes for a sample gas containing sample components to be detected and an inactive gas are connected through valves to this collector tube. Initially, a sample gas containing sample components with odor is introduced into the collector tube at normal temperature such that the sample components to be detected are adsorbed to the adsorbent. Thereafter, the valves are switched such that the inactive gas is introduced into the collector tube while its temperature is increased by a heater, causing the sample components to be desorbed into the inactive gas and to be transported into an odor sensor. If odor sensors requiring oxygen for detection are used, an oxygen-containing gas such as air is mixed into the inactive gas after the latter has passed through the collector tube such that deterioration of the adsorbent by oxidation can be prevented.

摘要翻译： 气味测定装置具有含有吸附剂的收集管，该吸附剂在正常温度下吸附有气味的样品成分，并在加热时解吸。 含有待检测样品组分的样品气体和非活性气体的流动路径通过阀连接到该收集管。 首先，将含有气味的样品成分的样品气体在常温下引入收集管，使待检测的样品成分吸附在吸附剂上。 此后，切换阀，使得惰性气体被引入收集管中，同时通过加热器增加其温度，使得样品组分被解吸到惰性气体中并被运送到气味传感器中。 如果使用需要用于检测的氧气的气味传感器，则在惰性气体通过集电管之后，诸如空气的含氧气体被混合到惰性气体中，从而可以防止吸附剂的氧化劣化。

公开(公告)号：US06360584B1

公开(公告)日：2002-03-26

申请号：US09438442

申请日：1999-11-12

申请人： Kunihiko Okubo ,  Keiso Kawamoto ,  Motoo Kinoshita ,  Hiroshi Nakano ,  Jun-ichi Kita ,  Mitsuyoshi Yoshii ,  Hisamitsu Akamaru

发明人： Kunihiko Okubo ,  Keiso Kawamoto ,  Motoo Kinoshita ,  Hiroshi Nakano ,  Jun-ichi Kita ,  Mitsuyoshi Yoshii ,  Hisamitsu Akamaru

IPC分类号： G01N33497

CPC分类号： G01N33/0034 ,  G01N33/0031

摘要： A device for measurement of an odor component in a sample gas prepares many target gases to be actually measured by a plurality of sensors with different response characteristics, each containing the odor component at a different concentration. Detection signals from these sensors are analyzed by a method of multivariate analysis such as the principal component analysis, and the odor component is characterized on the basis of such an analysis. For preparing the target gases, the sample gas containing the odor component is passed through a collector tube containing an adsorbent which adsorbs this odor component at normal and subnormal temperature and desorbs it when heated. After a specified amount of the odor component is adsorbed to the adsorbent, the tube is heated and an inert gas serving as carrier gas is passed through such that the desorbed odor component is carried to the detectors as a target gas. The concentration of the odor component in such a target gas is controlled by the manner of flow of the carrier gas. In order to obtain a dependable result from such an analysis, response characteristics of each of the sensors may be analyzed by examining the relationship between the outputted detection signal and the concentration of the odor component in the target gas. Only those of the sensors which show a monotonically varying or linear response characteristics may be considered trustworthy and only the detection signals from such trustworthy detectors may be used for the analysis.

摘要翻译： 用于测量样品气体中的气味成分的装置通过具有不同响应特性的多个传感器来准备实际测量的许多目标气体，每个具有不同浓度的气味组分。 来自这些传感器的检测信号通过多变量分析的方法进行分析，例如主成分分析，并且基于这种分析来表征气味成分。 为了制备目标气体，含有气味成分的样品气体通过含有吸附剂的收集管，吸附剂在正常和低于正常温度下吸附该气味成分，并在加热时解吸。 在规定量的气味成分被吸附到吸附剂上之后，加热管，使作为载气的惰性气体通过，使解吸的气味成分作为目标气体输送到检测器。 这样的目标气体中的气味成分的浓度通过载气的流动方式进行控制。 为了从这种分析获得可靠的结果，可以通过检查输出的检测信号和目标气体中的气味成分的浓度之间的关系来分析每个传感器的响应特性。 只有显示单调变化或线性响应特性的传感器才能被认为是可靠的，并且只有来自这种可靠检测器的检测信号可用于分析。